Websites are going to treat AI agents as a negotiation, not a given. MIT Technology Review's look at the agentic web notes Amazon blocking Meta's Muse agent, and we expect more of that as sites watch agents read their pages without the visits that pay for them. If you are building agents that work over documents, build on sources you have a clear right to use: your own files, licensed feeds, APIs with terms. Browsing the open web makes a good demo and a fragile dependency.